Furnace-lining.



R. CORLE & G. G. GLAAR.

FURNACE LINING.

APPLIOATION HLED Nov. 2s, 1913.

Patented Jan. 5, 1915.

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ROSS CORLE AND GEORGE C. CLAAR', 0F COLVILLE, "WASltllltGTON FURNACE-LINING.

Specification of Letters Patent.

Patented J an. 5, 1915.

Application filed November 26, 1.913. Serial No. 803,366.

To all wiom it may concern.'

Be it known that we, Ross ConLn and GEORGE C. CLAAR, citizens of the United States, residing at Colville, in the county of Stevens, and State of iVashington, have invented certain new and useful lmpro'vements in Furnace-Linings, of which the following is a specification. f

This invention relates to improvements in steam boiler furnaces and more particularly to an improved lining for furnace boilers, the primary object of the invention being to devise a furnace liningwhich provides a supplemental boiler adapted to be attached to the ordinary steam boiler whereby the capacity of the boiler may be materially increased and the operating expense proportionately reduced.

The invention has for a further object to provide a combined furnace and supplemental boiler adapted for connection to the conventional type of steam boiler now in general use which will result in a material economy in the consumption of fuel and also obviate liability of the furnace lining boing burnt out by the intense heat.

It is a further object of our invention to generally improve and simplify the construction of furnace boilers of the above character, to increase their efficiency in practical operation and enable the same to be produced at comparatively small manufacturing cost.

Vith the above and other objects in view as will become apparent as the description proceeds, the invention consists in certain constructions, combinations and arrangements of the parts that we shall hereinafter fully describe and claim.

For a full understanding of the invention, reference is to be had to the following description and accompanying drawings, in which- Figure l is an end elevation of a boiler furnace constructed in accordance with the preferred embodiment of my invention; Fig. 2 is a side elevation thereof; Fig. 3 is a transverse section taken on the line T-T of Fig. 2; Fig. 4 is a longitudinal section taken on the line R-R of Fig. l.

Referring in detail to the drawings, N indicates a single sheet of boiler steel from which the inner and outer concentric walls of my improved furnace lining indicated generally by the letter O are formed. These walls are of substantially semi-cylindrical form in cross section and at one of their ends are provided with the usual head plates. These plates as well as the coaXially disposed walls of the shell or lining are connected by stay bolts indicated at S.

A and B designate hand holes which are provided in the end or head plates of the furnace lining, and D designates the furnace door.

rlhe space C between the coaXially disposed ivalls of the furnace lining which serves as a water jacket is connected to the boiler K through the medium of the pipes l) which connect the lower side of the boiler at one end to the forward end of the water space C. Supply pipes P also connect the water space C at its rear end with opposite sides of the boiler approximately on a line with its center. These pipes are provided with flexible joints indicated at E. The water level in the boiler K is indicated by the letter WV.

L designates the drainage valves for draining the water from the space C, and M indicates a gage cock.

The combined furnace lining and supplemental boiler is mounted in the usual brick foundation indicated at F.

A grate G extends between the longitudinal edges of the inner semi-circular wall of the furnace lining, and fuel is fed to this grate through the opening J provided in the top of said lining.

The ash pit is indicated at H.

t will be understood from the foregoing that our improved furnace lining is mounted in the foundation or support for the boiler structure, in advance of the boiler, and the fire box extends rearwardly beneath the boiler as well as upon the grate G.

From the foregoing description taken in connection with the accompanying drawings, it will be seen that we have produced an improved boiler furnace or lining therefor whereby the process of steam generation is greatly facilitated. By means of our invention, it will be manifest that comparatively cold water is continuously supplied to the water space C of the furnace lining from the boiler K thereby preventing said lining being burnt out by the intense heat. The hot water rises from the forward end of the water space C through the pipes P and is returned to the boiler. Thus by preliminarily heating the water to a high degree, steam may be quickly gen- Cil erated in the boiler and with appreciably less fuel consumption than is required in the ordinary steam boiler now in general use. Itwill further be appreciated that our invention is very simple in its construction and may therefore be manufactured and installed in common types of steam boilers at comparatively small cost.

It will of course be obvious that the capacity of the water space C may be increased to any desired extent in proportion to the ca-l pacity of the boiler. We also reserve the privilege of resorting to all other legitimate changes in the form, proportions and arrangements of the several elements asmay ybe fairly resorted to within the spirit and scope of the invention as claimed.

Having thus described the invention, what is claimed is:

1. The'combination with a steam boiler, of a furnace arranged in front of said boiler, a lining for said furnace including inner and outer coaxially arranged walls of substantially semi-cylindrical form in cross section and providinga water space between them, water circulating pipes connecting the rear end of said water space to opposite sides of the boiler at its approximate center, to supply water from the boiler to said water space, and additional return pipes connecting said water space adjacent its lower forward end to the lower side of said boiler.

2. The combination with a steam boiler, of a furnace arranged in front of said boiler including a suitable foundation and a furnace lining consisting of a continuous sheet of boiler steel providing inner and outer coaxially disposed walls of substantially semi-cylidrical form in cross section, a grate extending between the longitudinal edges of the inner wall, pipes connecting the rear upper end of the space between said furnace plates to opposite sides of the boiler approximately at the center thereof to supply cold water to said water space, and additional return pipes connecting the lower forward end of said water space to the lower side of the boiler.

Dated at Colville, Washington, November 2o, 1913.

ROSS CORLE. GEORGE C. CLAAR. l/Vitnesses:

F. G. HARVEY, R. B. THOMAS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

